My $0.02 is that this puts us in a very vulnerable position.  Amazon can 
introduce bugs/nuances at will which can have serious implications for us -- if 
they want to disrupt our efforts it's very easy for them to do so.  Reverse 
engineering Amazon's EC2 can also take a serious amount of effort -- we need to 
be continuously testing against it etc. Are we doing this now?

When Rackspace makes the switch you will automagically have a lot of clients 
with very good incentive to use our API and to give local deployments of 
OpenStack a try.  I'm not convinced that we *need* EC2 in the long run 
precisely because of this.

-jOrGe W.

On Jul 8, 2011, at 10:23 AM, Sandy Walsh wrote:

> I don't think this is a technical issue, it's a business issue. If we want 
> adoption, we have to reduce switching friction. Sadly, this means EC2 
> bugs/nuances and all. 
> 
> The better a job we do of this, the easier it will be for users to transition 
> from EC2 to OpenStack and benefit from all the chocolatey goodness we're 
> baking into it.
> 
> $0.02
> 
> 
> ________________________________________
> From: openstack-bounces+sandy.walsh=rackspace....@lists.launchpad.net 
> [openstack-bounces+sandy.walsh=rackspace....@lists.launchpad.net] on behalf 
> of Jorge Williams [jorge.willi...@rackspace.com]
> Sent: Friday, July 08, 2011 12:01 PM
> To: Soren Hansen
> Cc: Ewan Mellor; openstack@lists.launchpad.net
> Subject: Re: [Openstack] Cross-zone instance identifiers in EC2 API - Is it 
> worth the effort?
> 
> I'm with Ewan on this point:   One of the nice thing about having a contract 
> is that it clearly designates what's a bug and what isn't.  If the spec says 
> the ID is a string and the client assumes it's an integer, then the client is 
> at fault.  End of story.  It would be a different issue if the contract 
> didn't specify what an ID was or if the contract only allowed for integers.
> 
> It's bad enough that we are spending resources trying to support an API which 
> isn't open and which we don't control, now on top of that we want to support 
> buggy clients that don't follow the spec?  Where do we draw the line? I'm all 
> for being flexible and forgiving in what we expect from clients, but I don't 
> think we should be making serious engineering decisions based on the fact 
> that a client developer made a bad assumption or didn't read the spec.
> 
> If we know that there are clients out there that make the assumptions then 
> contact the folks that maintain the client and ask them to adjust their code. 
>  If they give you grief, point to the contract and that should settle the 
> issue. It's to their interest to support as many deployments of the API as 
> possible. It's not our responsibility to support their buggy code.
> 
> Though I have some reservations about it, I'm okay offering some support for 
> the EC2 contract. What I'm not okay with is in being in the business of 
> reverse engineering Amazon's EC2 implementation.  Those are two very 
> different things and I think the latter is orders of magnitude more 
> difficult.  In fact I would argue that reverse engineering EC2 is a project 
> onto itself. That means that when EC2 has a bug, we need to replicate it etc. 
>  That's almost impossible and it makes it really easy for Amazon to disrupt 
> our efforts if they so wish.  What's more, it gets in the way of our ability 
> to innovate and break new ground.
> 
> -jOrGe W.
> 
> On Jul 8, 2011, at 7:39 AM, Soren Hansen wrote:
> 
>> 2011/7/8 Ewan Mellor <ewan.mel...@eu.citrix.com>:
>>>> The whole point of supporting the EC2 API is to support people's
>>>> existing tools and whatnot. If we follow the spec, but the clients
>>>> don't work, we're doing it wrong.
>>> True enough.  However, in the case where we've got a demonstrated 
>>> divergence from the spec, we should report that against the client.  I 
>>> agree that we want to support pre-existing tools, but it's less clear that 
>>> we want to support _buggy_ tools.
>> 
>> We do. We have to. We have no way to know what sort of clients people
>> are using. We can only attempt to check the open source ones, but
>> there's likely loads of other ones that people have built themselves
>> and never shared. Not only do people have to be able, motivated and
>> allowed to change their tools to work with OpenStack, they also need
>> to *realise* that this is something that needs to happen. We can't
>> assume the symptoms they'll experience even gives as much as a hint
>> that the ID's they're getting back is too long. They may just get a
>> general error of some sort.
>> 
>> If we a) expect people to consume the EC2 API we expose, and (more
>> importantly) b) expect ISP's to offer this API to their customers, it
>> needs to be as close to "just another EC2 region" as possible.
>> 
>>> If Amazon turn out to be resistant to fixing that problem, then we'll 
>>> obviously have to accept that and move on, but we should at least give them 
>>> a chance to respond on that.
>> 
>> Amazon is not the problem. At least not the only problem. I'm not even
>> going to begin to guess how many different tools exist to talk to the
>> EC2 API.
>> 
>> --
>> Soren Hansen        | http://linux2go.dk/
>> Ubuntu Developer    | http://www.ubuntu.com/
>> OpenStack Developer | http://www.openstack.org/
>> 
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